The Reverse Flower Fan can't be learned in the EoPCF (unless it's been revised in later editions, I have no clue)
it's just a move I came up with a while ago and it's just another way of doing it differently. Another example would be a regular thumb fan, speed fan (a thumb fan done a little quicker), and the index fan...all producing the same result but give the performer a variety of goodies to pick from.
-Andrei Jikh